Table 2.

Study quality assessment using PROBAST.

Study ID	Domain 1.	Domain 2.	Domain 3.	Domain 4.
	Participants	Predictors	Outcome	Analysis
Kim et al. (15)	+	+	?	–
Nori et al. (16)	+	+	+	+
Fisher et al. (27)	+	+	?	?
Wang et al. (29)	+	+	+	?
Mar et al. (30)	+	+	+	?
Park et al. (31)	+	+	+	+
Jauk et al. (32)	+	+	?	?
Ben Miled et al. (7)	+	+	–	?
Nori et al. (33)	+	?	+	+
Mar et al. (34)	+	+	+	+
Tsang et al. (17)	+	+	+	?

+ indicates low ROB; – indicates high ROB; ? indicates unclear ROB.